/*
 * Copyright 2010-2015 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jetbrains.kotlin.idea.util.application

import com.intellij.openapi.application.ApplicationManager
import com.intellij.openapi.command.CommandProcessor
import com.intellij.openapi.project.Project

fun <T> runReadAction(action: () -> T): T {
    return ApplicationManager.getApplication().runReadAction<T>(action)
}

fun <T> runWriteAction(action: () -> T): T {
    return ApplicationManager.getApplication().runWriteAction<T>(action)
}

fun Project.executeWriteCommand(name: String, command: () -> Unit) {
    CommandProcessor.getInstance().executeCommand(this, { runWriteAction(command) }, name, null)
}

fun <T> Project.executeWriteCommand(name: String, groupId: Any? = null, command: () -> T): T {
    return executeCommand<T>(name, groupId) { runWriteAction(command) }
}

fun <T> Project.executeCommand(name: String, groupId: Any? = null, command: () -> T): T {
    var result: T = null as T
    CommandProcessor.getInstance().executeCommand(this, { result = command() }, name, groupId)
    @Suppress("USELESS_CAST")
    return result as T
}